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20140340273

ANTENNA APPARATUS - There is provided an antenna apparatus capable of stably communicating with a communication partner and increasing the maximum possible communication range even when the antenna apparatus is relatively smaller than an antenna in the communication partner and the two antennas are disposed in close proximity on the same axis. A magnetic flux passing through a coil aperture of an antenna coil passes through a conductor aperture of a conductive layer, but the magnetic flux does not pass through the conductive layer. Accordingly, the magnetic flux is diverted to a path in which the conductor aperture of the conductive layer is the inside and the outer edge of the conductive layer is the outside. As a result, the magnetic flux passing through the coil aperture of the antenna coil makes a relatively large loop and links the inside and the outside of a coil conductor in an antenna in a communication partner with the antenna apparatus.

11-20-2014

20090295663

Receiving antenna coil - The present invention provides a receiving antenna coil capable of realizing both improvement in the reception characteristic and miniaturization. In a receiving antenna coil, at least one of an X-axis winding core part and a Y-axis winding core part is formed in a plurality of bars. While increasing occupancy of the winding core parts (the X-axis winding core part and the Y-axis winding core part) in a region in the XY plane surrounded by a Z-axis receiving coil, the length of the winding core parts can be assured long. Further, since the X-axis winding core part and the Y-axis winding core part are provided in the same plane, the height of the core is suppressed, and the dimension of the entire receiving antenna coil can be suppressed.

12-03-2009

20090295664

ANTENNA COIL MOUNTED TO BOARD AND ANTENNA DEVICE - An antenna device is constructed such that an antenna coil including a magnetic core and a flexible substrate is mounted to a circuit board. A first coil portion having a coil axis parallel or substantially parallel with a main surface of the magnetic core includes a first coil and a third coil. A second coil portion includes a second coil and a fourth coil. A conductor-free portion is located between the first and second coil portions. The flexible substrate includes a projection, and first to fourth coil connections are drawn out at the projection. The antenna device is constructed such that each of the coils is connected on the circuit board by connecting to a conductor pattern on the circuit board at the projection of the flexible substrate.

12-03-2009

20140340272

TELEMETRY EXTENSION CABLE - The invention of the disclosure is an extension cable to connect via telemetry, an external medical device in a non-sterile zone with a medical device that is within a sterile zone. The telemetry extension cable includes a cable having a length and comprising a conductor, a first RF antenna attached at one end of the cable and a second RF antenna attached at a second end of the cable, at least one of the first or second antennas configured to transmit and receive RF signals to and from an implantable medical device.

11-20-2014

20130038498

MULTI-AXIAL RESONANT FERRITE CORE ANTENNA - An antenna system for use with very low frequency or low frequency RF tags include a plurality of ferrite core coils disposed at an angle with respect to each other. The antenna system further includes a secondary coil disposed around at least one of the primary coils. The antenna system can provide a multi-axis antenna including two, three, or more than three antenna elements. The antenna system can be disposed in a gang box for a less aesthetically intrusive installation.

02-14-2013

20130229319

ANTENNA DEVICE AND COMMUNICATION TERMINAL APPARATUS - An antenna device includes a base including a planar conductor disposed thereon, and a coil antenna. The coil antenna includes a coil conductor wound around a magnetic core. The coil antenna is arranged such that a coil opening of the coil conductor is closed to an edge of the planar conductor. A current passing through the coil conductor induces a current in the planar conductor. Thus, a first magnetic flux occurs in the coil antenna, and a second magnetic flux occurs in the planar conductor. Therefore, a third magnetic flux occurs in an area of the planar conductor. Accordingly, the antenna device achieves a small footprint, a small-sized communication terminal apparatus and a desired communication distance.

09-05-2013

20140176382

ANTENNA DEVICE AND COMMUNICATION TERMINAL APPARATUS - An antenna device includes a feed coil connected to a feed circuit, and a coil antenna disposed near the feed coil. A ferrite sheet, in which a magnetic loss term in a usable frequency band is relatively large, is provided between the feed coil and the coil antenna. The feed coil and the coil antenna are magnetically coupled to each other via the ferrite sheet. With this configuration, signal transmission efficiency between the feed coil and the coil antenna is enhanced.

06-26-2014

20110018777

SELF-CONTAINED COUNTERPOISE COMPOUND LOOP ANTENNA - The present invention relates to a self-contained counterpoise compound field antenna. Improvements relate particularly, but not exclusively, to compound loop antennas having coplanar electric field radiators and magnetic loops with electric fields orthogonal to magnetic fields that achieve performance benefits in higher bandwidth (lower Q), greater radiation intensity/power/gain, and greater efficiency. Embodiments of the self-contained antenna include a transition formed on the magnetic loop and having a transition width greater than the width of the magnetic loop. The transition substantially isolates a counterpoise formed on the magnetic loop opposite or adjacent the electric field radiator.

01-27-2011

20160028160

ANTENNA DEVICE - An antenna device of a magnetic coupling type includes a magnetic body having a plate-like shape; and a coil, which is wound around the magnetic body.

01-28-2016

20160028158

POLYGON NEAR FIELD COMMUNICATION ANTENNA - A polygon Near Field Communication (NFC) antenna comprises: a first radiation part, a second radiation part, a third radiation part, and at least an antenna feed point. The first radiation part is arranged to have a single turn trace with single layer or multi-layer, a single turn wire routing with single layer or multi-layer, a multi-turns trace with single layer or multi-layer, or a multi-turns wire routing with single layer or multi-layer, and formed to have a first pattern. The second radiation part is arranged to have a single turn trace with single layer or multi-layer, a single turn wire routing with single layer or multi-layer, a multi-turns trace with single layer or multi-layer, or a multi-turns wire routing with single layer or multi-layer, and formed to have a second pattern. The third radiation part is coupled between the first radiation part and the second radiation part.

01-28-2016

20120098724

ANTENNA DEVICE AND COMMUNICATION TERMINAL APPARATUS - The disclosure provides an antenna device and communications terminal including such an antenna device. The antenna device includes a coil including a conductor wound around a plate-shaped magnetic core. A flat conductor is positioned adjacent to the coil, and the coil is positioned such that it is closer than the flat conductor to an antenna of a communication partner positioned near the antenna device. The coil conductor includes a first conductor portion adjacent to a first main surface of the magnetic core and a second conductor portion adjacent to a second main surface thereof. A circuit substrate includes a ground electrode formation area and a ground electrode non-formation area. The antenna coil is mounted on the ground electrode non-formation area of the circuit substrate with the first main surface of the magnetic core facing the circuit substrate.

04-26-2012

20100220025

Omnidirectional flat antenna and method of production - The inventive antenna comprises a planar substrate carrying as first winding whose axis is arranged in a parallel position to the plane of the substrate. Said antenna also comprises at least one second winding, whose axis is arranged in a parallel position to the plane of the substrate and which is wound-up about a thin layer made of high magnetically permeable material and arranged in a parallel position with respect to the plane of the substrate. A third winding, whose axis is perpendicular to the first and second windings and which is wound-up about an additional thin layer can be provided. Said additional thin layer is arranged in a parallel position to the plane of the substrate and is made of high magnetically permeable material.

09-02-2010

20120062436

MAGNETIC ANTENNA AND BOARD MOUNTED WITH THE SAME - A magnetic antenna, suitable for use in an RFID tag and an RFID tag reader/writer, which operates stable even if brought close to a metallic object and suitable for mass-production, and a board mounted with the magnetic antenna. The magnetic antenna has a coil with a magnetic layer and a conductive layer provided on the magnetic layer via an insulating layer or has a plurality of coils each with a magnetic layer having a square or rectangular shape and arranged radially.

03-15-2012

20100283698

ANTENNA CIRCUIT, METHOD FOR REDUCING RESISTANCE OF ANTENNA CIRCUIT, AND TRANSPONDER - A method for reducing a resistance of an antenna circuit capable of obtaining a desired property by reducing wiring resistance to a suitable value while ensuring inductance is provided. An antenna circuit is disposed to a transponder having a carrier frequency band of 13.56 MHz. The antenna circuit is formed of a prescribed base material and two antenna conductors each of which is formed of the same conductor pattern forming an antenna coil, formed on respective front and back surfaces of the base material by electrically parallel connection. Each of the two antenna conductors has a thickness of greater than equal to 5% and less than 50% of an overall thickness formed of the two antenna conductors and the base material.

11-11-2010

20160093954

BOBBIN FOR BAR ANTENNA AND BAR ANTENNA INCLUDING BOBBIN - A bobbin for a bar antenna includes a core holding portion being configured to be mounted with a stick-shaped core, and a restriction portion being connected to the core holding portion, the restriction portion being configured to restrict a turned-back portion of a conductive wire from moving to a side where a lamination portion is positioned, the conductive wire forming the lamination portion by being wound to the core in a first direction in a longitudinal direction of the core, the turned-back portion serving as a portion being turned back in a second direction that is different from the first direction.

03-31-2016

20120081258

COIL ANTENNA AND ANTENNA STRUCTURE - The disclosure describes a compact coil antenna that can operate even if the coil antenna is arranged closely to its conductor plate, and that has a high degree of coupling with a target antenna. A lower coil conductor part and an upper coil conductor part each have a substantially rectangular and spiral form, and the inner end of the lower coil conductor part connects to the inner end of the upper coil conductor part to be connected in series to the inner end of the upper coil conductor part. In the lower coil conductor part and the upper coil conductor part, the arrangement interval in parallel-to-axis parts including segments that are parallel to the direction of the axis of a magnetic-material core is shorter than the arrangement interval of segments in orthogonal-to-axis parts that are orthogonal to the axis of the magnetic-material core.

04-05-2012

20140125538

NEAR FIELD COMMUNICATION ANTENNA - Devices and methods are disclosed for providing an improved antenna for NFC mobile devices. Embodiments of the disclosure provide an antenna configuration that makes it possible to establish an NFC link when an NFC mobile device is oriented in ergonomic positions that are desirable for a user. In various embodiments, the NFC antenna is folded and wrapped around a portion of the case of a mobile wireless device. Using the NFC antenna disclosed herein, an NFC link can be established regardless of the orientation of the NFC wireless mobile device and another NFC device, as long as the antenna-bearing end of the wireless mobile device is pointed toward the antenna of the other NFC device.

Antenna Assembly - An antenna assembly includes a substrate including a first surface and a second surface, an antenna coil attached to the first surface of the substrate and including a number of pins, a flexible printed circuit board including a number of first contacts electrically connected to the pins, wherein the substrate is disposed in a same plane with the flexible printed circuit board.

ANTENNA COIL - An antenna coil includes a magnetic layer such as a flat magnetic sheet, a transmission coil portion defined by a coiled conductor, a reception coil portion defined by a coiled conductor, a transmission coil connection defined by the conductor and defining a portion of the transmission coil portion, and a reception coil connection defined by the conductor and defining a portion of the reception coil portion. The transmission coil portion and the reception coil portion are at least partly formed side by side on the magnetic layer and are arranged to be connected to a wiring pattern on an external circuit.

07-26-2012

20100277387

Space Efficient Magnetic Antenna Method - A space efficient magnetic antenna is disclosed for use in tracking, positioning and other applications. In a preferred embodiment, a space efficient magnetic antenna system comprises a first magnetic antenna with a first null axis aligned within a predetermined plane and a second magnetic antenna having a second null axis aligned substantially orthogonal to a first null axis. A second magnetic antenna system lies in a minimal coupling orientation with respect to a first magnetic antenna system. Additionally, a first magnetic antenna may further comprise a plurality of interconnected magnetic antenna elements. A space efficient magnetic antenna system may include an RF module. In further embodiments, the antenna system may enclose a substantial majority of the device including the RF module; the RF module may be enclosed substantially or wholly within one or more antennas of the antenna system.

Magnetically coupling near-field RFID antenna - An improved magnetically coupling near-field RFID antenna is embodied as a magnetic H-field coupler, and the near-field RFID antenna is embodied as a looped and/or frame-shaped antenna. The looped and/or frame-shaped antenna comprises a looped or frame-shaped strip conductor. The strip conductor is arranged set apart from a ground surface parallel thereto. A dielectric is interposed. The start and the end of the strip conductor end close to each other forms, a gap or spacing. The start of the strip conductor is fed to ground. The end of the strip conductor is terminated by a terminating resistor. The terminating resistor is connected between the end of the strip conductor and a ground surfaces.

Metamaterial particles having active electronic components and related methods - Metamaterial particles having active electronic components are disclosed. According to one aspect, a metamaterial particle in accordance with the subject matter disclosed herein can include a field sensing element adapted to sense a first field and adapted to produce a sensed field signal representative of the first field in response to sensing the first field. Further, the metamaterial particle can include an active electronic component adapted to receive the sensed field signal and adapted to produce a drive signal based on the sensed field signal. A field generating element can be adapted to receive the drive signal and adapted to produce a second field based on the drive signal.

11-18-2010

20120112978

ANTENNA DEVICE - An antenna device having a magnetic core to be surface-mounted on a circuit substrate includes a pair of coil portions spaced apart from each other at a predetermined interval. The coil portions are connected by a connecting conductor. An end of the magnetic core includes a curved or bent portion curved toward the circuit substrate. This structure defines an RFID antenna device having an improved receiving sensitivity that can be surface-mounted without increasing the thickness of a casing of a mobile electronic device.

05-10-2012

20100164822

COIL FOR ANTENNA - The present invention is to provide a coil for an antenna with small inductance fluctuation and high productivity. According to the invention, an antenna coil

07-01-2010

20150077302

COMPACT ELECTROMAGNETIC-RADIATION ANTENNA - A compact random media size antenna employing random magnetic and dielectrics nm to mm range size particles in polymer hosts is used to transfer E & M oscillations in 1 kHz to 900 Mhz range using a 1 cm to 1 meter length antenna. This is achieved by using small size particles and a random mean path length of E & M wavefront travel in and about a core tube of effective length matching L

03-19-2015

20150333397

COMMUNICATION MODULE - Various embodiments provide a communication module having a carrier, a loop antenna, a modulation circuit which is coupled to the loop antenna and is configured to modulate or demodulate signals which are received or transmitted using the loop antenna, and an impedance matching circuit for matching the impedance of the loop antenna to the input impedance of the modulation circuit. The modulation circuit and the impedance matching circuit are arranged inside the loop antenna on or in the carrier.

11-19-2015

20150333389

WIRELESS COMMUNICATION SYSTEM, ANTENNA MODULE AND ELECTRONIC DEVICE - Provided is a wireless communication system which has excellent communication characteristics even between antenna modules having antenna coils between which there is a large difference in outside diameter. The wireless communication system includes: a first antenna module including a first antenna coil; and a second antenna module including a second antenna coil and capable of communication by receiving a magnetic field transmitted from the first antenna module, in which the first antenna coil and the second antenna coil have mutually different outside diameters, and, out of the first antenna coil and the second antenna coil, the antenna coil having a larger outside diameter is formed in such a way that the area of an opening portion inside the innermost perimeter of an antenna pattern is not more than 120% of the outside diameter area of the other antenna coil having a smaller outside diameter.

11-19-2015

20160043469

COIL ANTENNA AND COMMUNICATION TERMINAL DEVICE - To ensure a sufficient communication distance and to concurrently suppress a conductor loss, a coil antenna includes a magnetic core including a first peripheral surface including at least a first principal surface, a first coil conductor located on the first principal surface and wound around a predetermined winding axis, a first base material layer stacked on the first principal surface, including at least a first surface parallel or substantially parallel to the first principal surface, and made of a material having a lower magnetic permeability than the magnetic core, and a second coil conductor located on at least the first surface. Opposite ends of the second coil conductor are coupled to the first coil conductor on the first principal surface, and a direction in which a current flows through the first coil conductor on the first principal surface is substantially the same as a direction in which a current flows through the second coil conductor on the first surface.

02-11-2016

20140253404

ANTENNA DEVICE AND RADIO COMMUNICATION APPARATUS - An antenna device includes a multilayer body including magnetic layers or dielectric layers that are stacked, a first coil conductor that has a winding axis extending in a direction perpendicular or substantially perpendicular to a stacking direction of the multilayer body, the first coil conductor being provided in the multilayer body, and a second coil conductor that has a winding axis extending in a direction perpendicular or substantially perpendicular to the winding axis of the first coil conductor, the second coil conductor being provided in the multilayer body.

09-11-2014

20140247192

WIRELESS COMMUNICATION MODULE AND COMMUNICATION TERMINAL APPARATUS INCORPORATING THE SAME - A wireless communication module includes a multilayer structure including a magnetic block and at least one non-magnetic layer stacked on the magnetic block, the magnetic block including at least one magnetic layer, at least one inductor element disposed at the magnetic block, and an antenna coil disposed at the non-magnetic layer so as to overlap the inductor element in a planar view along a stacking direction of the non-magnetic layer with respect to the magnetic block, wherein the magnetic layer is present between the inductor element and the antenna coil.

09-04-2014

20140361944

ANTENNA - An antenna includes antenna coil having a magnetic-material core and a coil conductor. The antenna coil is arranged toward a side of a planar conductor, such as a circuit board. Of the coil conductor, a first conductor part close to a first main face of the magnetic-material core and a second conductor part close to a second main face of the magnetic-material core are provided such that the first conductor part is not over the second conductor part in view from a line in a direction normal to the first main face or the second main face of the magnetic-material core. In addition, a coil axis of the coil conductor is orthogonal to the side of the planar conductor.

12-11-2014

20150035718

ANTENNA DEVICE AND WIRELESS COMMUNICATION APPARATUS - A plurality of first linear sections in a coil conductor are disposed on a lower surface of a first resin sheet. A plurality of second linear sections in the coil conductor are disposed on an upper surface of a second resin sheet. A plurality of via conductors in the coil conductor are disposed in the resin sheets. The coil conductor including the linear sections and the via conductors constitutes an antenna section. A first ground conductor is disposed on the lower surface of a third resin sheet. A second ground conductor is disposed on the upper surface of a fourth resin sheet. The first ground conductor and the second ground conductor are connected to each other by a interlayer connection conductor including a plurality of via conductors. The interlayer connection conductor does not define a closed loop surrounding the coil conductor.

EDGE-EMITTING ANTENNAS FOR ULTRA SLIM WIRELESS MOBILE DEVICES - Described herein are techniques related to near field coupling and wireless power transfers. A mobile device may include an edge-emitting antenna that offers ultra slim, all-metallic chassis packaging option with no cutout, uses lesser area, has robust mechanical strength, and provides EMI/ESD protection. In one example, an inductor coil is wrapped around a magnetic core and a pair of conductive layers is configured to interpose the magnetic core and the inductor coil between them to expose an edge of the magnetic core. The inductor coil being operable in a transmit mode to generate a magnetic field in response to a current passing through it. The edge is configured to enhance outward radiation of the magnetic field. Based on simulation results, the edge-emitting antenna occupies less space and provides an acceptable level of performance for coupling coefficients compared to conventional antenna.

ANTENNA DEVICE AND RADIO-WAVE RECEIVER WITH SUCH ANTENNA DEVICE - A radio-wave receiver is provided with a hollow-cylindrical case, a plate-like module member accommodated within the cylindrical case, a transparent member closing one opening end of the cylindrical case, a cover closing the other opening end of the cylindrical case, and an antenna structure disposed on the side position of the plate-like module member. The antenna structure is provided with a core including a plurality of plate-like magnetic members layered on each other in a direction perpendicular to the thickness direction of the plate-like module member, a coil wound around a central straight part of the core, and bent end portions extending from both ends of the core and bent to conform to the inner periphery of the cylindrical case.

07-29-2010

20130229320

SMALL ANTENNA APPARATUS OPERABLE IN MULTIPLE BANDS INCLUDING LOW-BAND FREQUENCY AND HIGH-BAND FREQUENCY AND SHIFTING LOW-BAND FREQUENCY TO LOWER FREQUENCY - A radiator is provided with a looped radiation conductor, a capacitor, an inductor, a feed point on the radiation conductor, and a magnetic block provided at at least a part of the inside of a loop of the radiation conductor. When the radiator is excited at a low-band resonance frequency, a first current flows through a first path extending along an inner perimeter of the loop of the radiation conductor and including the inductor and the capacitor. Magnetic flux produced by the first current passes through the magnetic block, thus increasing the inductance of the radiation conductor. When the radiator is excited at a high-band resonance frequency, a second current flows through a second path including a section extending along an outer perimeter of the loop of the radiation conductor, the section including the capacitor but not including the inductor, the section extending between the feed point and the inductor.

09-05-2013

20140266949

STACK-TYPE INDUCTOR ELEMENT AND METHOD OF MANUFACTURING THE SAME, AND COMMUNICATION DEVICE - A stack-type inductor element includes a stack including a magnetic element layer, a coil conductor pattern provided in the stack and the magnetic element layer defines a magnetic element core, a plurality of first pad electrodes provided on one main surface of the stack, and a plurality of second pad electrodes provided on the other main surface of the stack so as to be symmetric to the plurality of first pad electrodes. One end and the other end of the coil conductor pattern are electrically connected to two of the plurality of first pad electrodes, respectively, and the plurality of second pad electrodes are all electrically open.

09-18-2014

20140313092

ANTENNA ARRANGEMENT, COMMUNICATION APPLIANCE AND ANTENNA STRUCTURE - In various embodiments, an antenna arrangement is provided. The antenna arrangement may include at least one integrated circuit; at least one loop antenna that is coupled to the integrated circuit and that forms a loop antenna region; at least one antenna that is coupled to the integrated circuit and that has a magnet core; wherein at least one portion of the magnet core is arranged above a portion of the loop antenna region; wherein the portion of the magnet core overlaps the portion of the loop antenna region; or wherein the portion of the magnet core does not overlap the portion of the loop antenna region.

10-23-2014

20100321267

ANTENNA DEVICE - An antenna device includes a circuit board and an antenna coil that includes a flexible board on which plural coil conductors are formed and a magnetic core inserted into through holes provided in the flexible board. In each of the plural coil conductors, a first conductor portion is adjacent to a first principal surface of the magnetic core and a second conductor portion is adjacent to a second principal surface of the magnetic core and are positioned so as not to overlap each other in a normal direction with respect to the first or second principal surfaces. The second conductor portion is located farther from the center of the circuit board than the first conductor portion.

12-23-2010

20150048985

ANTENNA MODULE FOR NEAR FIELD COMMUNICATION - Embodiments of the invention provide an antenna module for NFC. According to at least one embodiment, the antenna module includes an antenna sheet patterned with a loop coil of a conductive metal material, a magnetic shielding sheet comprising a metal sheet, which is embedded in a magnetic sheet, and an adhesive film interposed between the antenna sheet and the magnetic shielding sheet.

02-19-2015

20140300522

COIL ANTENNA, COIL ANTENNA-MOUNTED STRUCTURE, COIL ANTENNA MANUFACTURING METHOD, COIL ANTENNA-MOUNTED STRUCTURE MANUFACTURING METHOD - A coil antenna has a core that is plate-shaped and includes a magnetic material; a coil wire that is wound around the core; a first insulating layer that is arranged on a surface of the core, the insulating layer being arranged to cover the coil wire and have a flat surface opposite the core; a second insulating layer that is arranged on a rear face opposite the surface of the core, the second insulating layer being arranged to cover the coil wire and to have a flat surface opposite the core; a flat first metal layer arranged on the flat surface of the first insulating layer; and a flat second metal layer arranged on the flat surface of the second insulating layer.

10-09-2014

20150340764

ANTENNA - An antenna includes antenna coil having a magnetic-material core and a coil conductor. The antenna coil is arranged toward a side of a planar conductor, such as a circuit board. Of the coil conductor, a first conductor part close to a first main face of the magnetic-material core and a second conductor part close to a second main face of the magnetic-material core are provided such that the first conductor part is not over the second conductor part in view from a line in a direction normal to the first main face or the second main face of the magnetic-material core. In addition, a coil axis of the coil conductor is orthogonal to the side of the planar conductor.

11-26-2015

20150340754

ANTENNA DEVICE AND MANUFACTURING METHOD THEREOF - Disclosed herein is an antenna device that includes an antenna coil having a planar coil pattern, a magnetic sheet that covers one main surface of the antenna coil, and a resin layer provided on the other main surface of the antenna coil and along the coil pattern. The resin layer is substantially the same planar shape as the planar coil pattern.

11-26-2015

20090322640

MAGNETIC ANTENNA APPARATUS AND METHOD FOR GENERATING A MAGNETIC FIELD - The present invention relates to a magnetic transmit antenna apparatus comprising: a toroidal core transformer having a primary winding inductively coupled to a secondary winding supplying a low voltage and high current to a magnetic transmit antenna wherein the magnetic transmit antenna includes a wire loop having multiple turns for generating a magnetic field. The toroidal core transformer includes a primary winding that operates in association with the secondary winding to match the impedance of a signal source to the magnetic transmit antenna.

12-31-2009

20140176384

ANTENNA DEVICE AND COMMUNICATION TERMINAL DEVICE - An antenna device includes a power feed coil antenna connected to a power feed circuit, and a booster coil antenna including wound coil conductors and disposed so as to be electromagnetically coupled to the power feed coil antenna. The power feed coil antenna includes a first coil antenna and a second coil antenna each including a coil conductor, and the coil conductors of the first and second coil antennas are connected in phase with each other. The first coil antenna is disposed such that the winding axis of the coil conductor of the first coil antenna extends perpendicularly or substantially perpendicularly to the winding axis of the booster coil antenna, and such that at least a portion of the first coil antenna overlaps the coil conductor of the booster coil antenna as viewed in plan. The second coil antenna is disposed in the vicinity of the coil conductors such that the winding axis of the coil conductor of the second coil antenna extends in parallel with the winding axis of the booster coil antenna, and such that at least a portion of a coil opening of the second coil antenna does not overlap the coil conductors of the booster coil antenna as viewed in plan.

06-26-2014

20140176383

COIL ANTENNA DEVICE AND ANTENNA MODULE - In a coil antenna device, a multilayer structure includes non-magnetic sheets and magnetic sheets stacked on each other. A coil conductor is provided in the multilayer structure such that a portion of the magnetic material defines a magnetic core and such that a coil axis extends along a principle surface of the multilayer structure. The coil conductor includes a plurality of line conductors each of which extends on one principle surface side of the magnetic material, a plurality of line conductors each of which extends on the other principle surface side of the magnetic material, and a plurality of via-hole conductors extending in a thickness direction of the multilayer structure so as to be surrounded with the magnetic material. The plurality of via-hole conductors defines a coiled structure together with the line conductors.

06-26-2014

20150109179

MAGNETIC SHEET, METHOD FOR MANUFACTURING MAGNETIC SHEET AND ANTENNA COMPRISING THE MAGNETIC SHEET - Disclosed are a magnetic sheet, a method of manufacturing the same and an antenna including the magnetic sheet. In the magnetic sheet manufactured by stacking a plurality of green sheets on top of each other and calcining the stacked plurality of green sheets, the plurality of green sheets are stacked after a different material layer is formed on a certain portion of both surfaces or one surface of at least one of the plurality of green sheets.

04-23-2015

20140055313

MAGNETIC MATERIAL ANTENNA AND ANTENNA DEVICE - A spiral coil conductor defining its winding central section as a conductor opening section is formed on a flexible substrate. The flexible substrate has a U shaped bend along a line passing through the conductor opening section so as to envelop a magnetic material core. The magnetic material core is arranged in a state where its end face faces the bend of the flexible substrate, and the magnetic material core includes cut shapes provided at a portion of the end face. The portion at the end face faces coil conductor sections at the bend of the flexible substrate, and the cut shapes separate the portion apart from the coil conductor sections.

ANTENNA DEVICE ANTENNA MODULE - An antenna device includes a multilayer body as a base body, an antenna coil, and a capacitor chip. The multilayer body includes a magnetic layer including a first main surface and a second main surface, a first non-magnetic layer provided on the first main surface of the magnetic layer, and a second non-magnetic layer provided on the second main surface of the magnetic layer. The antenna coil includes a first coil pattern provided with the first non-magnetic layer and a second coil pattern provided with the second non-magnetic layer. The capacitor chip is connected to the antenna coil and provided on the second non-magnetic layer.

07-24-2014

20140203985

COIL ANTENNA AND COMMUNICATION TERMINAL DEVICE - To ensure a sufficient communication distance and to concurrently suppress a conductor loss, a coil antenna includes a magnetic core including a first peripheral surface including at least a first principal surface, a first coil conductor located on the first principal surface and wound around a predetermined winding axis, a first base material layer stacked on the first principal surface, including at least a first surface parallel or substantially parallel to the first principal surface, and made of a material having a lower magnetic permeability than the magnetic core, and a second coil conductor located on at least the first surface. Opposite ends of the second coil conductor are coupled to the first coil conductor on the first principal surface, and a direction in which a current flows through the first coil conductor on the first principal surface is substantially the same as a direction in which a current flows through the second coil conductor on the first surface.

07-24-2014

20110156978

ANTENNA DEVICE - An antenna device having a magnetic core to be surface-mounted on a circuit substrate includes a pair of coil portions spaced apart from each other at a predetermined interval. The coil portions are connected by a connecting conductor. An end of the magnetic core includes a curved or bent portion curved toward the circuit substrate. This structure defines an RFID antenna device having an improved receiving sensitivity that can be surface-mounted without increasing the thickness of a casing of a mobile electronic device.

06-30-2011

20150054704

ANTENNA MODULE FOR TERMINAL DEVICE AND METHOD FOR MANUFACTURING THE SAME - An antenna module for a terminal device includes: a substrate; and a conductive coil on the substrate and having a first end at an outside of the conductive coil and a second end at an inside of the conductive coil, the conductive coil including: one or more loops; and a plurality of conductive strips extending from an innermost one of the one or more loops.

02-26-2015

20160126631

ANTENNA DEVICE AND COMMUNICATION APPARATUS - An antenna device includes a power supply coil including wire patterns provided on or in magnetic layers and antenna coils including wire patterns provided on or in the magnetic layers. The power supply coil and the antenna coils include coil winding axes thereof coinciding with a lamination direction of the magnetic layers and generate magnetic field coupling to each other. The power supply coil is located on an inner side portion relative to the antenna coils when seen in the lamination direction. At least portions of the antenna coils are located on outer side portions relative to the power supply coil in the lamination direction. With this, an antenna device and a communication apparatus capable of communicating with a communication party reliably without forming an unnecessary communication path with a party-side coil are provided.

ANTENNA DEVICE - A booster antenna having an aperture and a slit extending from the aperture to a distal end portion H, and a feeding coil having a coil conductor wound around a magnetic core. At least a part of an opening of the coil conductor is disposed at a position overlapping with the aperture of the booster antenna in plan view. The coil conductor is wound around the magnetic core such that a first conductor part disposed on a first surface of the magnetic core and a second conductor part disposed on a second surface of the magnetic core are located at different positions in plan view. The feeding coil is disposed such that the first surface faces the booster antenna and the first conductor part is disposed close to the distal end portion H of the booster antenna.

07-17-2014

20130300622

ANTENNA DEVICE AND METHOD OF SETTING RESONANT FREQUENCY OF ANTENNA DEVICE - In antenna device, a coil conductor of an antenna coil module and a conductor layer at least partially overlap. A current flows in the conductor layer to block a magnetic field generated by a current flowing in the coil conductor. A current flows along the periphery of a slit and around the periphery of the conductor layer due to a cut-edge effect. Since magnetic flux does not pass through the conductor layer, magnetic flux attempts to bypass the conductor layer along a path in which the conductor opening of the conductor layer is on the inside and the outer edge of the conductor layer is on the outside. As a result, the magnetic flux generates large loops that link the inside and the outside of a coil conductor of an antenna on a reader/writer side to couple an antenna device and the antenna on the reader/writer side.

11-14-2013

20100156735

ANTENNA UNIT AND MOBILE TERMINAL THEREWITH - An antenna unit includes an antenna formed on a magnetic sheet. A transmission circuit includes an inductor, a matching capacitor, and the antenna connected in series, and a reception circuit includes the antenna, the matching capacitor, a resistor, and a capacitor connected in series. The antenna is formed as one turn, and the size of the antenna and the resistor involves a predetermined relationship.

ANTENNA COIL TO BE MOUNTED ON A CIRCUIT BOARD AND ANTENNA DEVICE - In an antenna coil including a first magnetic core, a second magnetic core, and a flexible board, coil conductors are provided on a surface of the flexible board. By winding the flexible board around the first magnetic core and the second magnetic core, a first coil portion is disposed around the first magnetic core, and a second coil portion is disposed around the second magnetic core. The winding direction of the second coil portion is opposite to that of the first coil portion. The first coil portion and the second coil portion are connected to define one coil as a whole.

01-20-2011

20110241958

ANTENNA COIL TO BE MOUNTED ON A CIRCUIT BOARD AND ANTENNA DEVICE - In an antenna coil including a first magnetic core, a second magnetic core, and a flexible board, coil conductors are provided on a surface of the flexible board. By winding the flexible board around the first magnetic core and the second magnetic core, a first coil portion is disposed around the first magnetic core, and a second coil portion is disposed around the second magnetic core. The winding direction of the second coil portion is opposite to that of the first coil portion. The first coil portion and the second coil portion are connected to define one coil as a whole.

10-06-2011

20140184462

ANTENNA MODULE AND RADIO COMMUNICATION DEVICE - An antenna module includes a first coil conductor, a second coil conductor and a magnetic layer. The first coil conductor and the second coil conductor are arranged with a magnetic layer interposed therebetween so that a coil aperture of the first coil conductor and a coil aperture of the second coil conductor are opposed to each other in alignment. An inner end portion of the first coil conductor and an inner end portion of the second coil conductor are electrically connected. The first coil conductor and the second coil conductor are connected to each other so that directions of magnetic fluxes generated in coil-wound axis directions of the first coil conductor and the second conductor are mutually opposite to each other. A magnetic flux φ entering a metal body in a perpendicular direction thereto flows in a lateral direction of the magnetic layer.

07-03-2014

20150102970

MAGNETIC MATERIAL CORE-EMBEDDED RESIN MULTILAYER BOARD, MANUFACTURING METHOD THEREFOR, ELECTRONIC DEVICE, AND ANTENNA DEVICE - An antenna device includes a resin multilayer board in which a plurality of resin sheets are stacked, and a coil conductor provided in the resin multilayer board. A plurality of line portions of the coil conductor are provided on a lower surface of the resin sheet. When a magnetic material core is preliminarily pressure-bonded to the resin sheet, the magnetic material core is fractured along the line portions and cracks occur. Thus, the resin sheet with the magnetic material core in which the cracks have been formed is fully pressure-bonded together with the other resin sheets.

04-16-2015

20140049436

ANTENNA DEVICE AND COMMUNICATION TERMINAL APPARATUS - An antenna device includes a first coil wound in one direction and a second coil disposed adjacent to the first coil and wound in a direction opposite to the winding direction of the first coil and having conductor openings at the centers of wound coils, and a magnetic core. The magnetic core is inserted into the conductor opening of the first coil and the conductor opening of the second coil. A portion of a conductor line forming the first coil positioned farther away from the second coil than a portion of the conductor line forming the first coil positioned closer to the second coil, and a portion of a conductor line forming the second coil positioned farther away from the first coil than a portion of the conductor line forming the second coil positioned closer to the first coil, are disposed along the first main surface of the magnetic core.

02-20-2014

20150070233

NEAR-FIELD COMMUNICATION ANTENNA, ANTENNA MODULE AND WIRELESS COMMUNICATIONS APPARATUS - A near-field communication antenna comprising at least one annular coil, a planar, non-magnetic resin member holding the annular coil, a planar, soft-magnetic member overlapping the non-magnetic resin member via the annular coil, and terminals to which the conductor wire leads of the annular coil are connected, the annular coil being received in a circumferential recess along the periphery of the non-magnetic resin member lest that it projects from the periphery of the magnetic member, and the conductor wire leads of the annular coil being connected to the terminals through notches provided in the peripheral edge of the soft-magnetic member.

Extended magnetic core antenna - The present invention discloses an antenna for coupling to a magnetic field component of an electromagnetic signal. The antenna comprises a coil of wire

12-01-2011

20100309081

MAGNETIC MATERIAL ANTENNA AND ANTENNA DEVICE - A spiral coil conductor defining its winding central section as a conductor opening section is formed on a flexible substrate. The flexible substrate has a U shaped bend along a line passing through the conductor opening section so as to envelop a magnetic material core. The magnetic material core is arranged in a state where its end face faces the bend of the flexible substrate, and the magnetic material core includes cut shapes provided at a portion of the end face. The portion at the end face faces coil conductor sections at the bend of the flexible substrate, and the cut shapes separate the portion apart from the coil conductor sections.

12-09-2010

20100309080

COMPLEX ANTENNA AND COMMUNICATION DEVICE - A complex antenna which receives or transmits a plurality of electromagnetic waves of different frequencies is provided. A first one of the electromagnetic waves is an alternating magnetic flux. The complex antenna includes a first antenna which receives or transmits the alternating magnetic flux. The complex antenna includes a second antenna arranged such that the first antenna and the second antenna overlap as viewed from a direction in which the alternating magnetic flux penetrates the first antenna. The second antenna is adapted for reducing an induction effect of a current which is induced by the alternating magnetic flux and flows in the second antenna.

12-09-2010

20150084822

CIRCUIT BOARD AND CIRCUIT MODULE - A circuit board and a circuit module more accurately provide impedance matching between an antenna coil and an electronic component electrically connected to the antenna coil, and include a board body including board portions and a plurality of laminated insulating material layers made of a flexible material. An antenna coil includes coil conductors provided in the board portion. Wiring conductors are provided in the board portion and electrically connected to the antenna coil. The board portion has a structure that is less likely to deform than the board portion. An integrated circuit electrically connected to the wiring conductors is mounted on the board portion.

03-26-2015

20100060540

RADIO WAVE RECEIVER WITH AN ANTENNA STRUCTURE - A radio wave receiver comprising an antenna structure placed within a case. The antenna structure has a rod-like core around which a coil is wound. A pair of opposite external magnetic members are each provided in a respective one of a pair of cavities provided so as to extend along the inner periphery of the case from adjacent the respective ends of the rod-like core toward the end points of an inner diameter of the case parallel to the axis of the rod-like core. The pair of external magnetic members is substantially the same permeability as the core. Thus, the antenna core is magnetically coupled to the pair of external magnetic members.

PORTABLE ELECTRONIC DEVICE - A portable electronic device includes a circuit board and an antenna coil installed on the circuit board. The antenna coil includes a magnetic core and a coil wound at either side of an unwound portion. The winding direction of the coil is changed at either side of the unwound portion. When the length of the magnetic core is defined as X and the distance between two intersecting points at which a virtual line formed by projecting the central line of the magnetic core onto the circuit board intersects the outer periphery of the circuit board is defined as Y, the antenna coil satisfies Y≧X≧0.8Y.

07-01-2010

20140191916

ANTENNA DEVICE AND ELECTRONIC APPARATUS - An antenna device includes an antenna coil, a magnetic core, and a metal member. The antenna coil is mounted on a flexible base. The antenna coil is wound in a loop shape or a spiral shape such that its winding center section is a coil opening section. The magnetic core passes through a slit opening section in the flexible base. The metal member has a rectangular opening. The antenna coil is exposed through the opening in the metal member. A front-side coil conductor is nearer the opening than the magnetic core, and thus a magnetic flux links the front-side coil conductor.

07-10-2014

20100156734

Chip-type antenna for receiving FM broadcasting signal and a manufacturing method thereof - A chip-type antenna for receiving FM broadcasting signal includes a ceramic substrate, a ferrite layer formed on a top surface of the ceramic substrate, and a radiation structure. The ceramic substrate and the ferrite layer form an antenna substrate. The radiation structure is formed on the antenna substrate. The chip-type antenna for receiving FM broadcasting signal utilizes the high dielectric constant of the ceramic substrate and the electric characteristic of the ferrite layer to reduce the dimension of the antenna.

06-24-2010

20090243952

ANTENNA COIL - An antenna coil includes a wound body including a magnetic core, a bobbin surrounding the magnetic core, and a coil wound around the bobbin, a case in which the wound body is placed, and a foam disposed in a gap between the wound body and the case. The foam is compressed at a rate of about 45% to about 65% on the basis of a thickness of the foam in a non-load state. The antenna coil prevents breakage of the magnetic core and is suitable for use in a short-distance communication system in an LF-band.

10-01-2009

20090267855

ANTENNA CORE AND ANTENNA - An antenna core produced by shaping a soft magnetic metal powder with the use of a resin as a binder, wherein the soft magnetic metal powder is an amorphous soft magnetic metal powder or a nanocrystal-containing amorphous soft magnetic metal powder, of the general formula (1): (Fe

10-29-2009

20130033408

THREE-AXIS ANTENNA AND CORE ASSEMBLY USED THEREIN - A core assembly comprising first and second core members each having a rectangular body around which an X-axis coil and a Y-axis coil are wound, and flanges integrally and diagonally extending from the body; and a bobbin having an annular portion and projections diagonally extending therefrom; the projections of the bobbin being provided with terminal members connected to coil ends of the X-axis coil, the Y-axis coil and the Z-axis; the annular portion of the bobbin acting as a space for disposing the first core member from one side, and providing a space receiving at least partially the body of the second core member from the other side, such that the body of the first core member is at least partially adjacent to the body of the second core member; and a space for winding the Z-axis coil being provided between the projections of the bobbin and the flanges of the second core member.

02-07-2013

20140071011

ANTENNA - An antenna includes antenna coil having a magnetic-material core and a coil conductor. The antenna coil is arranged toward a side of a planar conductor, such as a circuit board. Of the coil conductor, a first conductor part close to a first main face of the magnetic-material core and a second conductor part close to a second main face of the magnetic-material core are provided such that the first conductor part is not over the second conductor part in view from a line in a direction normal to the first main face or the second main face of the magnetic-material core. In addition, a coil axis of the coil conductor is orthogonal to the side of the planar conductor.

03-13-2014

20150042529

ANTENNA COIL COMPONENT, ANTENNA UNIT, AND METHOD OF MANUFACTURING THE ANTENNA COIL COMPONENT - Provided is an antenna coil component including a bobbin around which a winding is wound, a base provided at least at one end side of the bobbin, and one or more metal terminals each fixed to the base, at least one metal terminal among these metal terminals including a fixing part for fixing the metal terminal to the base, a mounting part provided at a position away from the fixing part, and a neck part for connecting the fixing part and the mounting part to each other. The neck part has a length in a direction substantially orthogonal to a direction from the fixing part to the mounting part and substantially parallel to surfaces of the mounting part, which is narrower than that of the mounting part. Provided as well are an antenna unit using the antenna coil component, and a method of manufacturing the antenna coil component.

Directive Bar-Type Antenna - Disclosed is a directional bar-type antenna which comprising a plurality of bar-shaped antenna elements including a core and a coil wound around the core. The first bar-shaped antenna element is disposed at a position of a mirror image of the second bar-shaped antenna element with respect to the core of the third bar-shaped antenna element. The first and second bar-shaped antenna elements is positioned such that one end of each of the first and second bar-shaped antenna elements is close to the third bar-shaped antenna element, and the other end is far from the third bar-shaped antenna element. In the present invention, a winding direction of the coil of the first bar-shaped antenna element is preferably identical to that of the coil of the second bar-shaped antenna element, and is opposite to that of the coil of the third bar-shaped antenna element. The directional bar-type antenna of present invention can meet a need for providing asymmetrical directionality in a forward-rearward direction of an antenna for use in a specific system, such as a keyless entry system, and solve a problem in terms of cost and external appearance, in a technique of partially surrounding a bar-type antenna by a shielding member, in view of difficulty in freely controlling directionality of an antenna in an induced electromagnetic field domain, and a need to allow the bar-type antenna to have a difference between respective receiving sensitivities in forward and rearward directions in the induced electromagnetic field domain (while facilitating a reduction in size and cost).

ANTENNA - An antenna includes antenna coil having a magnetic-material core and a coil conductor. The antenna coil is arranged toward a side of a planar conductor, such as a circuit board. Of the coil conductor, a first conductor part close to a first main face of the magnetic-material core and a second conductor part close to a second main face of the magnetic-material core are provided such that the first conductor part is not over the second conductor part in view from a line in a direction normal to the first main face or the second main face of the magnetic-material core. In addition, a coil axis of the coil conductor is orthogonal to the side of the planar conductor.

04-05-2012

20130181876

ANTENNA DEVICE AND COMMUNICATION TERMINAL APPARATUS - An antenna device that includes coil antennas each having a coil conductor wound around a winding axis and a planar conductor including a surface and an edge end portion, the surface extending along the winding axis of the coil conductor, the edge end portion being adjacent to a coil opening of the coil conductor. A current flowing through the coil conductor induces a current in the planar conductor, this current produces a magnetic flux in a direction normal to the planar conductor, and thus the planar conductor acts as a booster antenna. The antenna device has directivity in the direction normal to the planar conductor because the magnetic flux produced by the coil antennas and that produced by the planar conductor are combined. This enables the antenna device to occupy a small area while achieving a predetermined communication distance.

07-18-2013

20150035717

FOLDED NEAR FIELD COMMUNICATION ANTENNA - Provided is an antenna structure which is capable of having sufficient antenna performance even in an antenna having a small cross-sectional area. The antenna of the present invention comprises: a ferrite sheet; and an antenna sheet (flexible printed circuit board) which has a spiral loop antenna pattern. The antenna sheet is folded and the ferrite sheet is inserted therein to form a folded antenna. The folded antenna is configured in such a manner that a longitudinal pattern of the spiral loop antenna pattern is disposed close to a longitudinal centerline portion of the ferrite sheet.

02-05-2015

20150035716

SINGLE TURN MAGNETIC DRIVE LOOP FOR ELECTRONIC ARTICLE SURVEILLANCE - A single turn loop electronic article surveillance (EAS) gate. The gate includes a closed magnetic core, a multi-turn primary winding wound around the core, and a secondary loop passing through the core once. The secondary loop is a self-supporting single turn loop, and the secondary loop is a transmit loop that generates a magnetic drive field for the article detection gate system.

02-05-2015

20150022410

ANTENNA MAGNETIC CORE, ANTENNA USING SAME, AND DETECTION SYSTEM - An antenna magnetic core of an embodiment has a laminate of a Co-based amorphous magnetic alloy thin strip and a resin layer part having an average thickness in a range of from 1 to 10 μm. Dispersion of thicknesses of the resin layer part is within ±40% in relation to the average thickness.

CIRCUIT BOARD AND CIRCUIT MODULE - A circuit board and a circuit module more accurately provide impedance matching between an antenna coil and an electronic component electrically connected to the antenna coil, and include a board body including board portions and a plurality of laminated insulating material layers made of a flexible material. An antenna coil includes coil conductors provided in the board portion. Wiring conductors are provided in the board portion and electrically connected to the antenna coil. The board portion has a structure that is less likely to deform than the board portion. An integrated circuit electrically connected to the wiring conductors is mounted on the board portion.

03-08-2012

20120086619

RESONANCE-TYPE, RECEIVING ANTENNA AND RECEIVING APPARATUS - A resonance-type, receiving antenna comprising a circular-ring-shaped, magnetic core constituting a closed magnetic path having one gap, one or more coils wound around the circular-ring-shaped, magnetic core, and a capacitor connected in parallel to both ends of each coil; an angle between a straight line extending from a geographical center of the circular-ring-shaped, magnetic core to a center of the gap and a straight line extending from the geographical center to a center of the coil being in a range of 10° to 90°.

04-12-2012

20130127681

ANTENNA, RADIO RECEIVER AND METHOD FOR MANUFACTURING ANTENNA - An antenna includes an elongated magnetic core, a secondary magnetic path member, a spacer and a coil. The secondary magnetic path member is disposed near the core, and forms a secondary magnetic path. The spacer is disposed between the core and the secondary magnetic path member so as to prevent the core and the secondary magnetic path member from being magnetically coupled. The coil is formed by winding a wire around the core in such a way as to bundle the core and the secondary magnetic path member together.

05-23-2013

20120007787

Planar Loop Antenna System - An inexpensive planar antenna fabricated as a plurality of parallel layers of multi turn spiral loops co-located with conductive material at the center of the loops, there being an exclusion zone free of conductive material between the innermost loop and the conductive material at the center. The conductive material may comprise circuit elements, for example batteries, amplifiers, antenna drivers or other functional elements as well as passive elements. In one embodiment, the loop traces may be staggered. In another embodiment, the loop traces are varied in width as a function of position within the loop cross section. In further embodiments, the planar form is integrated with additional orthogonal planar antennas substantially coplanar with the first planar antenna and having axes orthogonal to the first planar antenna and to one another. In further embodiments the exclusion zone is extended by design rules and confining routes in a circuit section. The antenna system may be configured as a three dimensional omnidirectional antenna and is well adapted for small form factor hand held and portable wireless applications.

01-12-2012

20130147675

ANTENNA DEVICE AND COMMUNICATION TERMINAL APPARATUS - An antenna device includes an antenna coil including a first conductive pattern disposed on a first major surface of a magnetic sheet, a second conductive pattern disposed on a first major surface of a non-magnetic sheet, and an interlayer conductor connecting the first conductive pattern and second conductive pattern. The antenna coil including the first conductive pattern and second conductive pattern defines a spiral or substantially spiral pattern. The antenna device is a resin multilayer structure in which its base body is a laminate of the magnetic layer and non-magnetic layer and the predetermined patterns are disposed inside and outside the laminate.

06-13-2013

20130234905

ANTENNA DEVICE AND METHOD OF SETTING RESONANT FREQUENCY OF ANTENNA DEVICE - In antenna device, a coil conductor of an antenna coil module and a conductor layer at least partially overlap. A current flows in the conductor layer to block a magnetic field generated by a current flowing in the coil conductor. A current flows along the periphery of a slit and around the periphery of the conductor layer due to a cut-edge effect. Since magnetic flux does not pass through the conductor layer, magnetic flux attempts to bypass the conductor layer along a path in which the conductor opening of the conductor layer is on the inside and the outer edge of the conductor layer is on the outside. As a result, the magnetic flux generates large loops that link the inside and the outside of a coil conductor of an antenna on a reader/writer side to couple an antenna device and the antenna on the reader/writer side.

09-12-2013

20130154891

ANTENNA DEVICE AND COMMUNICATION TERMINAL DEVICE - An antenna device or a communication terminal device including the antenna device includes ground conductor, which serves as a plate-shaped conductor and is provided in an inner layer of a circuit board. An antenna coil is mounted so that a first main surface of a magnetic core faces the circuit board. The antenna coil is arranged so that a first conductor portion of a coil conductor is at a position that is closer to the ground conductor than a second conductor portion. The antenna coil is arranged so that the first conductor portion of the coil conductor is positioned in the vicinity of a longitudinal direction end portion of a casing, and the first conductor portion of the coil conductor is bent in a direction toward the ground conductor.

06-20-2013

20130249758

ANTENNA COIL TO BE MOUNTED ON A CIRCUIT BOARD AND ANTENNA DEVICE - In an antenna coil including a first magnetic core, a second magnetic core, and a flexible board, coil conductors are provided on a surface of the flexible board. By winding the flexible board around the first magnetic core and the second magnetic core, a first coil portion is disposed around the first magnetic core, and a second coil portion is disposed around the second magnetic core. The winding direction of the second coil portion is opposite to that of the first coil portion. The first coil portion and the second coil portion are connected to define one coil as a whole.

09-26-2013

20160104937

COIL MODULE, ANTENNA DEVICE, AND ELECTRONIC DEVICE - Provided is a coil module which is reduced in size and made slimmer by incorporating a material and structure resistant to magnetic saturation. The coil module has: a magnetic resin layer containing magnetic particles; and a spiral coil, wherein the magnetic resin layer contains magnetic particles having a spherical shape or a spheroid shape having a dimensional ratio of not more than 6, the dimensional ratio being expressed as a ratio of the major diameter to the minor diameter.

CIRCUIT BOARD AND CIRCUIT MODULE - A circuit board and a circuit module more accurately provide impedance matching between an antenna coil and an electronic component electrically connected to the antenna coil, and include a board body including board portions and a plurality of laminated insulating material layers made of a flexible material. An antenna coil includes coil conductors provided in the board portion. Wiring conductors are provided in the board portion and electrically connected to the antenna coil. The board portion has a structure that is less likely to deform than the board portion. An integrated circuit electrically connected to the wiring conductors is mounted on the board portion.

ANTENNA APPARATUS AND COMMUNICATION TERMINAL - An antenna apparatus includes a power supply coil, a booster electrode sheet, a magnetic sheet, and a ground substrate arranged in this order from the top. The power supply coil includes a spiral coil conductor located on a flexible substrate. The booster electrode sheet includes a booster electrode located on an insulating substrate. The booster electrode includes a conductor region covering the coil conductor, a conductor aperture covering a coil window, and a slit portion connecting the outer edge of the conductor region and the conductor aperture in plan view. The magnetic sheet covers the booster electrode sheet so that the magnetic sheet covers a region slightly larger than a region including the conductor aperture and the slit portion of the booster electrode.

12-06-2012

20120262357

ANTENNA DEVICE AND METHOD OF SETTING RESONANT FREQUENCY OF ANTENNA DEVICE - In antenna device, a coil conductor of an antenna coil module and a conductor layer at least partially overlap. A current flows in the conductor layer and blocks a magnetic field generated by a current flowing in the coil conductor. A current, which flows around the periphery of an opening of the conductor layer, flows along the periphery of a slit and around the periphery of the conductor layer due to a cut-edge effect. Since magnetic flux does not pass through the conductor layer, magnetic flux attempts to bypass the conductor layer along a path in which the conductor opening of the conductor layer is on the inside and the outer edge of the conductor layer is on the outside. Accordingly, the magnetic flux generates relatively large loops linking the inside and the outside of a coil conductor of an antenna on a reader/writer side.

10-18-2012

20150303573

ANTENNA DEVICE - A coil component is provided with a substrate; an antenna coil formed into a loop-shaped or spiral-shaped on the substrate; and first and second metallic layers disposed so as to overlap the antenna coil in a planar view and to form a slit sandwiched the first and second metallic layers. The slit overlaps with an inner diameter portion of the antenna coil . At least one of the first and second metallic layers is formed into a loop shape having an opening. The antenna coil overlaps with the opening of at least one of the first and second metallic layers in a planar view.

10-22-2015

20160064821

COMMUNICATION TERMINAL APPARATUS AND ANTENNA DEVICE - An antenna device which includes a coil conductor and a booster conductor. The coil conductor is defined by wound loop-shaped conductors and includes a first opening at a winding center and two ends connected to a feeding circuit. The booster conductor includes a coupling conductor portion and a frame-shaped radiation conductor portion. The coupling conductor portion includes a second opening overlapped at least partially by the first opening, is split in a portion thereof by a slit, and is electromagnetically coupled to the coil conductor. The frame-shaped radiation conductor portion includes a third opening and is connected to the coupling conductor portion.

03-03-2016

20150145742

Aerial Module and Mobile Terminal Device - The present document discloses an antenna module and a mobile terminal device, the antenna module includes an NFC antenna and a wireless charging antenna, the NFC antenna includes a flexible circuit board and an NFC antenna coil disposed thereon; the wireless charging antenna includes a flexible circuit board and a wireless charging antenna coil disposed thereon; the NFC antenna and the wireless charging antenna share one flexible circuit board, and the wireless charging antenna coil is disposed at a position without antenna wiring in the middle of the NFC antenna coil; the ends of the NFC antenna coil and the wireless charging antenna coil form contacts extending out of the flexible circuit board; the mobile terminal device includes the abovementioned antenna module; the antenna module is attached to the inner side of the housing of the mobile terminal, or the surface of the battery body facing the battery cover.

05-28-2015

20120319913

ANTENNA DEVICE AND WIRELESS APPARATUS - According to one embodiment, an antenna device includes a feeding portion, first and second wire-like metal portions, third and fourth plate-like metal portions and a fifth metal portion. One ends of the first and second wire-like metal portions are connected to the feeding portion. The third and fourth plate-like metal portions are respectively connected to the other ends of the first and second metal portions and disposed separately from each other with a predetermined distance therebetween. The fifth metal portion is configured to connect the third metal portion to the fourth metal portion. A total electrical length of the first to fifth metal portions is 3/2 wavelength at operating frequency band.

12-20-2012

20150318609

ANTENNA DEVICE - An antenna device is provided with a substrate; an antenna coil formed into a loop-shaped or spiral-shaped on the substrate; a first metallic layer overlapping with a first part of the antenna coil in a planar view; and a second metallic layer overlapping with a second part of the antenna coil different from the first part. The first and second metallic layers are disposed on both sides of a center of an inner diameter portion of the antenna coil in a planar view, respectively. A slit formed between the first and second metallic layers overlaps with the inner diameter portion of the antenna coil in a planar view. At least one of the first and second metallic layers is formed on the substrate together with the antenna coil.

11-05-2015

20120319912

COMMUNICATION DEVICE AND SEMICONDUCTOR CHIP - A device includes a first substrate that has a first antenna having a first loop and second loop that form loop shapes viewed in a planar projection; and a second substrate that has a second antenna having a third loop and fourth loop that form loop shapes viewed in the planar projection. The first substrate and the second substrate are disposed so that the first antenna and the second antenna face each other. At least when the first substrate and the second substrate operate, the first antenna and the second antenna are in a state that the first antenna and the second antenna are capable of being magnetically coupled.

12-20-2012

20140176381

MAGNETIC COMPOSITE SHEET AND ELECTROMAGNETIC INDUCTION MODULE - There is provided a magnetic composite sheet including: a magnetic layer including first and second magnetic pieces having different sizes; and a cover film formed on one surface or both surfaces of the magnetic layer, wherein, in a cross-section of the magnetic composite sheet taken in a direction parallel to a direction in which the magnetic layer and the cover film are laminated, when a length of the first magnetic piece in a vertical direction is a and a length thereof in a horizontal direction is b, and a length of the second magnetic piece in the vertical direction is a′ and a length thereof in the horizontal direction is b′, b/a is greater than b′/a′(b/a>b′/a′).

06-26-2014

20140078013

HIGH TEMPERATURE TRANSPONDERS - The present invention provides, in alternative embodiments, high temperature transponders that can withstand high temperature shocks and can maintain their physical and electrical characteristics following high temperature exposure, and methods of making said transponders.

ANTENNA UNIT - An antenna unit applied to an electronic device is provided. The antenna unit includes an input/output (I/O) element, a conductive wire and a magnetic material. The outer surface of the input/output element has a spiral groove. The conductive wire is disposed in the spiral groove of the input/output element. The magnetic material may be adhered above or/and under the conductive wire according to different designs. Thus, the conductive wire is insulated from the metal of environment or the input/output element.

02-19-2015

20140104127

ANTENNA APPARATUS AND COMMUNICATION APPARATUS - The present invention provides an antenna apparatus which can realize favorable communication properties while achieving downsizing of a casing of an electronic device when incorporated in an electronic device. An antenna module (

04-17-2014

20140159974

ANTENNA DEVICE AND METHOD OF SETTING RESONANT FREQUENCY OF ANTENNA DEVICE - In antenna device, a coil conductor of an antenna coil module and a conductor layer at least partially overlap. A current flows in the conductor layer to block a magnetic field generated by a current flowing in the coil conductor. A current, which flows around the periphery of an opening of the conductor layer, flows along the periphery of a slit and around the periphery of the conductor layer due to a cut-edge effect. Since magnetic flux does not pass through the conductor layer, magnetic flux attempts to bypass the conductor layer along a path in which the conductor opening of the conductor layer is on the inside and the outer edge of the conductor layer is on the outside. As a result, the magnetic flux generates relatively large loops that link the inside and the outside of a coil conductor of an antenna on a reader/writer side.

06-12-2014

20140168026

ANTENNA - An antenna comprising a coreless coil formed by winding a conductor wire, a relay member connected to the coil, and a magnetic plate member covering the coil and part of the relay member; the relay member comprising a substrate having a notch for lead wires of the coil, and a pair of terminal members formed on the substrate; each terminal member comprising an internal terminal portion connected to an end of each lead wire, an external terminal portion connected to an external circuit, and a line portion connecting the internal terminal portion to the external terminal portion; the coil and part of the relay member disposed on the magnetic member being fixed to a first adhesive layer on the non-transmission side of the coil; and the internal terminal portion being positioned in a region overlapping the magnetic member, or in a region surrounded by the notch of the magnetic member.

06-19-2014

20140043196

ANTENNA DEVICE, WIRELESS COMMUNICATION DEVICE, AND METHOD OF MANUFACTURING ANTENNA DEVICE - In an antenna device, first linear portions of a coil conductor are located on a lower surface of a first resin sheet. Second linear portions of the coil conductor are located on an upper surface of a second resin sheet. Via conductors of the coil conductor are formed in the first and second resin sheets and intermediate resin sheets located between the first and second resin sheets. The via conductors connect a first end and a second end of the first linear portions and a first end and a second end of the second linear portions, respectively. The first and second linear portions and the via conductors define the coil conductor. Each of the intermediate resin sheets includes an aperture in the center portion thereof. The lamination of the apertures defines a cavity in which a magnetic substance core is embedded. The coil conductor is wound around a periphery of the cavity.

ANTENNA DEVICE - An antenna device includes a core portion made of a magnetic material, and a coil including a conductive wire wound on the core portion. The coil includes a winding portion, and an inductance adjuster portion wound at a larger pitch than the winding portion. The coil has an inductance changing according to a position of the inductance adjuster portion. This antenna device has a resonance frequency which is adjustable in a wide range.

10-06-2011

20150116171

BAR ANTENNA - A bar antenna comprises: a bar core configured to connect at least two of core pieces in series, a bobbin covering at least a portion of the bar core, a winding wound in a predetermined range of the bobbin, and a case having the bar core and the bobbin disposed therein, wherein the bar core and the bobbin are sealed by filling in the case with a potting material, and the bar core is configured to be bendable with respect to a predetermined external force at a connection portion of the at least two of core pieces.

04-30-2015

20090121955

ANTENNA COIL AND ANTENNA DEVICE - An antenna coil is obtained by winding a flexible substrate around a magnetic core. Conductors are provided on the flexible substrate, whereby a first coil portion and a second coil portion are provided on either side of the magnetic core except for in a middle portion. A non-winding portion including no conductors is provided between the first coil portion and the second coil portion on a main surface of the magnetic core.

05-14-2009

20090096693

LOW FREQUENCY ANTENNA - An antenna includes a core formed of a high-permeability material and a coil wire wrapped around at least a part of the core. In one embodiment, the high-permeability material includes ferrite material.

04-16-2009

20090140946

EFFICIENT METAMATERIAL-INSPIRED ELECTRICALLY-SMALL ANTENNA - Planar (two-dimensional) and volumetric (three-dimensional), metamaterial-inspired, efficient electrically-small antennas. The electric-based and magnetic-based antenna systems are shown to be naturally matched to a source and are linearly scalable to a wide range of frequencies. The systems include a radiating element that is fed by the source through a finite ground plane via a feedline and an electrically-small, one-unit cell made of a metamaterial that is adapted to match the input impedance of the antenna.

Antenna formed of multiple resonant loops - A magnetic and/or magneto-electric antenna that has a plurality of conducting loops that each can be resonated at a frequency that is offset from the other loops to provide a composite band-pass response that is broader than that of the individual loops.

Portable remote controller for tire status detector - A portable remote controller for a tire status detector, includes a portable casing, a transmission circuit disposed in the casing, a low-pass filter disposed at an output side of the transmission circuit for permitting a signal with a frequency of not more than the first frequency to pass through the low-pass filter, a receiving circuit disposed in the casing, a high-pass filter disposed at an input side of the receiving circuit for permitting a signal with a frequency of not less than the second frequency to pass through the high-pass filter, a ferrite bar antenna housed in the casing and having a ferrite bar wound with an antenna coil, the antenna coil having two terminals, one of which being connected to the ground and the other being connected in common to the low-pass and high-pass filers and a duplexer composed of the low-pass and high-pass filters. The ferrite bar antenna is used both for transmission of the long wave signals and for receipt of the ultra high frequency signals.

Antenna - There is provided an antenna whose outside shape can be miniaturized while maintaining a gain at a desired level with respect to a radio wave of a wide frequency range. The antenna is configured by using a core of a laminate structure. The core is a plate of a rectangular outside shape, configured to have a laminate structure including each of first, second and third resin layers. The first resin layer has magnetic powder mixed therein and formed as a middle layer, and the second resin layer and the third resin layer made of resin only without magnetic powder mixed therein are formed to sandwich the first resin layer therebetween. In the core of the laminate structure, it is preferable to use a polymer resin for each of the resin layers, and to use soft ferrite powder as the magnetic powder.

Antenna formed of multiple loops - A magnetic and/or magneto-electric antenna is provided that has a plurality of conducting loops. Two or more of the loops are driven by separate drivers.

06-25-2009

20090231227

ANTENNA, COMMUNICATION DEVICE, ANTENNA MANUFACTURING METHOD - An antenna includes a coil that is formed such that one end of the coil is short circuited or open to a ground and a current standing wave is generated when a high frequency signal is applied to another end of the coil. The coil generates a magnetic field standing wave having a frequency corresponding to the high frequency signal, and thereby detects or radiates an electromagnetic wave having the frequency.

09-17-2009

20090096694

ANTENNA DEVICE - An antenna device having a magnetic core to be surface-mounted on a circuit substrate includes a pair of coil portions spaced apart from each other at a predetermined interval. The coil portions are connected by a connecting conductor. An end of the magnetic core includes a curved or bent portion curved toward the circuit substrate. This structure defines an RFID antenna device having an improved receiving sensitivity that can be surface-mounted without increasing the thickness of a casing of a mobile electronic device.

04-16-2009

20090085820

MAGNETIC MATERIAL, MAGNETIC SHEET, AND PORTABLE ELECTRONIC APPARATUS - A magnetic material used for an antenna module of an RFID (radio frequency identification) system that uses a communication frequency of 13.56 MHz, includes an Fe alloy magnetic material containing Fe as a primary component, and Si and Al added thereto, and phosphorous of 0.2 to 0.5 wt % added to the Fe alloy magnetic material.

04-02-2009

20090009418

Miniature transponders - Systems and methods are disclosed for miniature transponders having capsule enclosure housings including a magnetic antenna core, such as a ferrite core, with a shaped form to provide space for an integrated circuit also included within the capsule enclosure housing. In addition, metal wire windings surround the antenna core, and these wires can be direct bonded to connections on the integrated circuit. Further, a stabilizing epoxy or other material can be inserted within the capsule enclosure housing to secure the antenna core and the integrated circuit within the capsule enclosure housing.

01-08-2009

20080238799

NEAR FIELD COMMUNICATION ANTENNA AND MOBILE DEVICE - An NFC antenna (“NFC” stands for “near field communication”) includes a ferrite antenna including a primary antenna coil wound on a ferrite core of the ferrite antenna; a loop coil provided in a position where components of a magnetic flux on a non-communication direction side interlink, the magnetic flux being generated by the ferrite antenna; and a loop coil switching unit for switching between a mode for forming a loop of the loop coil and a mode for disconnecting the loop.

10-02-2008

20160149305

ANTENNA DEVICE AND NEAR FIELD COMMUNICATION DEVICE INCLUDING THE SAME - An antenna device may include a substrate, a first coil formed on the substrate, a second coil formed on the substrate and formed outside of the first coil, and a magnetic sheet interposed between the substrate and the first coil. Whereby, the second coil formed around the first coil removes electromotive force formed by a magnetic field passing through the outside of the first coil such that a communication distance and communication strength may be improved.